From: Keith Packard <keith.packard@intel.com>
To: Dave Airlie <airlied@gmail.com>
Cc: keith.packard@intel.com,
Venki Pallipadi <venkatesh.pallipadi@intel.com>,
Ingo Molnar <mingo@elte.hu>, Hugh Dickins <hugh@veritas.com>,
Frans Pop <elendil@planet.nl>,
Jesse Barnes <jesse.barnes@intel.com>,
linux-kernel@vger.kernel.org, Yinghai Lu <yhlu.kernel@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Nick Piggin <npiggin@suse.de>,
Jesse Barnes <jbarnes@virtuousgeek.org>
Subject: Re: [git head] X86_PAT & mprotect
Date: Fri, 09 May 2008 22:45:59 -0700 [thread overview]
Message-ID: <1210398359.29406.169.camel@koto.keithp.com> (raw)
In-Reply-To: <21d7e9970805091511n2c6b6cfeu433b184d3031196d@mail.gmail.com>
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On Sat, 2008-05-10 at 08:11 +1000, Dave Airlie wrote:
> Wow this kinda puts X in a nasty position, we have 2.6.25 and previous kernels
> where we use the original /sys interfaces and nasty hack to
> workaround, but on 2.6.26 we magically need to
> switch to the /sys _uc interfaces or the users X will slow down.
It didn't sound like that to me -- using UC- should mean that if we set
up MTRRs correctly, we'll get WC access for our frame buffer. Did I miss
something here?
--
keith.packard@intel.com
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next prev parent reply other threads:[~2008-05-10 5:46 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-02 19:22 [git head] Should X86_PAT really default to yes? Frans Pop
2008-05-02 19:37 ` Pallipadi, Venkatesh
2008-05-02 20:40 ` Jesse Barnes
2008-05-02 21:55 ` Pallipadi, Venkatesh
2008-05-02 22:07 ` Jesse Barnes
2008-05-04 7:10 ` Frans Pop
2008-05-04 9:04 ` Ingo Molnar
2008-05-04 20:23 ` Yinghai Lu
2008-05-05 16:55 ` Frans Pop
2008-05-05 17:00 ` Pallipadi, Venkatesh
2008-05-05 17:42 ` Yinghai Lu
2008-05-05 18:56 ` Frans Pop
2008-05-05 15:57 ` Jesse Barnes
2008-05-05 17:32 ` Frans Pop
2008-05-05 17:45 ` Jesse Barnes
2008-05-05 17:59 ` Pallipadi, Venkatesh
2008-05-05 18:59 ` Frans Pop
2008-05-05 19:04 ` fb layer & ioremap_wc Jesse Barnes
2008-06-13 16:42 ` Frans Pop
2008-05-06 22:42 ` [git head] Should X86_PAT really default to yes? Venki Pallipadi
2008-05-07 7:02 ` [git head] X86_PAT & mprotect Ingo Molnar
2008-05-07 19:18 ` Hugh Dickins
2008-05-07 23:23 ` Venki Pallipadi
2008-05-09 10:08 ` Ingo Molnar
2008-05-09 20:05 ` Venki Pallipadi
2008-05-09 20:09 ` Venki Pallipadi
2008-05-09 20:48 ` Hugh Dickins
2008-05-09 22:11 ` Dave Airlie
2008-05-09 22:20 ` Pallipadi, Venkatesh
2008-05-10 6:19 ` Dave Airlie
2008-05-10 6:29 ` Keith Packard
2008-05-10 5:45 ` Keith Packard [this message]
2008-05-07 22:36 ` Venki Pallipadi
2008-05-25 15:08 ` [git head] Should X86_PAT really default to yes? Frans Pop
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